Sony PCM-M10/B Portable Linear PCM Recorder, 96 kHz/24-bit, 4GB Memory &amp; USB High-Speed Port, Red - Bundle With Sony ADPCM2 Wind Screen for PCM-M10 The PCM-M10's electret condenser microphones are omni-directional with a flat and wide frequency response and natural sound characteristics Includes both digital pitch control and key control, Digital pitch control maintains pitch while slowing down or speeding up playback speed, Key control allows changing the pitch while maintaining playback speed Conforms to the USB 2.0 Mass Storage Class Device standard, recording file formats include .WAV and .MP3, recordings can be uploaded to a computer and used in conjunction with most common audio production software Offers signal processing features for location recording including: digital limiter, auto record level control and a digital low cut filter, it also includes a 5 second pre record buffer, cross-memory recording and track marking functions